140161251 has 8 divisors (see below), whose sum is σ = 187073104. Its totient is φ = 93345120.

The previous prime is 140161249. The next prime is 140161303. The reversal of 140161251 is 152161041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140161251 - 2¹ = 140161249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140161051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20440 + ... + 26421.

It is an arithmetic number, because the mean of its divisors is an integer number (23384138).

Almost surely, 2^140161251 is an apocalyptic number.

140161251 is a deficient number, since it is larger than the sum of its proper divisors (46911853).

140161251 is an equidigital number, since it uses as much as digits as its factorization.

140161251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47861.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 140161251 is about 11838.9717036574. The cubic root of 140161251 is about 519.4486896157.

The spelling of 140161251 in words is "one hundred forty million, one hundred sixty-one thousand, two hundred fifty-one".